baber/WOPTO huggingface dataset:
Patent GB-1456522-A (GB)
Title: Oil-extended elastomer
IPC: C08L23/16
Filed: 1973-05-03
Abstract: 1456522 Oil-extended expanded elastomers EXXON RESEARCH & ENG CO 11 April 1974 [3 May 1973] 20992/73 Headings C3C and C3P Oil-extended expanded elastomers are prepared by displacing air from a compacted mass of expanded rubber crumbs having an apparent density between 55 and 85% of the bulk density of the elastomer, and causing oil to occupy initially the spaces vacated by the air while keeping the form of the mass of crumbs substantially unchanged. The rubber may be an EPDM, butyl, halogenated butyl, polyisobutylene, styrene/butadiene, polyisoprene or natural rubber. The oil may be a paraffinic, naphthenic or aromatic mineral oil, or an aromatic ester plasticizer. Low viscosity oils may contain a flow modifier to impart thixotropy. The displacement of air by oil may be effected by vacuum-assisted oil impregnation, injection of oil under pressure or by immersing the mass in oil and applying hydrostatic pressure to drive out the air, the oil within the cells of the elastomer being absorbed into the elastomer on standing, e.g. for 24 hours at room temperature, to give an oil extended product.
Patent GB-1101534-A (GB)
Title: Improvements in or relating to variable electrical condensers
Inventor: TIBBS CHRISTOPHER EVAN MUND EL
IPC: H05B6/46
Filed: 1964-05-21
Abstract: 1,101,534. Variable capacitors. RADYNE Ltd. 13 July, 1965 [21 May, 1964], No. 21085/64. Heading HIM. A variable capacitor acting as an output tuning capacitor for a high-frequency generator comprises a fixed plate 3 separated from the wall 2 of an earthed screening enclosure contaming the capacitor by a distance not greater than one-quarter of the square root of the area of the fixed plate, and a plate 5 hinged at 9 and movable in relation to the fixed plate by rotation of shaft 6 working toggle links 7 and 8. The space between fixed plate 3 and wall 2 may be filled with polypropylene. As shown, in the maximum capacity position, the portion of the movable plate 5 remote from the hinge is in contact with dielectric layer 11 of polypropylene. In the minimum capacity position as in Fig. 2 (not shown), most of the space between the plates is filled with air, and a capacity range of 100 to 1 is achievable. Pickup loop 1 supplies high frequency energy between the earthed surface 2 and fixed plate 3, and arrows 12 indicate the induction loop of the capacitor. This is made as short as possible by having output conductor 10, screened by duct 13, connected to the moving plate 5 at hinge 9.
Patent GB-904891-A (GB)
Title: Production of cyanuric chloride
Filed: 1959-06-19
Abstract: Cyanuric chloride is prepared by passing gaseous hydrogen cyanide and chlorine into a reaction zone containing finely divided activated carbon having a macropore (as defined) volume of at least 0,15 c.c./grm. and maintained at at least 350 DEG C., the rates of flow of hydrogen cyanide and chlorine being such as to maintain the activated carbon in a fluidized condition.  The temperature in the reaction zone may vary from 350 DEG  - 1000 DEG C. the preferred temperature being between 400 DEG  - 470 DEG C.  The reaction is exothermic and may be initiated by heating the activated carbon or the hydrogen cyanide and chlorine gases.  Such heating should be sufficient to initiate the reaction and should be controlled to produce temperatures below the temperatures attained in the reaction zone, e.g. where initially heating the activated carbon temperatures of at least 150 DEG C. should be produced.  A reaction chamber, say a vertical glass tube heated by an electric heating coil to say 200 DEG C. contains activated carbon of 30 to 140 mesh maintained in a fluidized condition by hydrogen cyanide and chlorine gases which enter the tube through a fritted glass disc at the bottom thereof. The proportions of hydrogen cyanide and chlorine may be stoichiometric or small molar excesses of chlorine may be used.  The effluent gases containing cyanuric chloride leave the top of the tube and are cooled in an air-cooled sublimation chamber where solid crystalline cyanuric chloride collects.  The reaction may be operated at superatmospheric, or atmospheric, pressures.
Patent GB-332053-A (GB)
Title: Improvements in or relating to glass feeding apparatus
IPC: C03B7/084
Filed: 1929-07-09
Abstract: 332,053. United Glass Bottle Manufacturers, Ltd., and Moorshead, T. C. July 9, 1929. Delivering molten metal.-A device for feeding charges of molten glass comprises a hollow reciprocating member which during its movement isolates a quantity of molten glass from a mass in a forehearth, and means for withdrawing by suction the whole, or part of the isolated glass into a receiving vessel. The device comprises a hollow plunger 3, Fig. 1, which reciprocates vertically above an outlet aperture 2 in the floor of a forehearth 1. The interior space of the plunger is connected by a flexible tube 6 to a vacuum pump. A gob former, positioned below the aperture 2, comprises a number of side portions 9 which are movable to and from one arother, and a base block 10 having an aperture 14 which is connected by a flexible tube 12 to the vacuum pump. Shears 13 move below the aperture 2 and above the gob former. In use, glass is sucked into the plunger 3 when it is ascending and, at the same time, the closed gob former is raised into air-tight contact with the lower surface of the aperture bushing. The vacuum within the plunger is then destroyed, and the plunger itself is lowered into contact with the aperture bushing, thus isolating a quantity of glass from the mass in the forehearth. Suction is also applied to the block 10 to assist the flow of the isolated glass into the gob former. When sufficient glass has issued, the former is lowered and suction is again applied to the interior of the plunger. This causes a neck 26, Fig. 4, to form in the glass which is cut through by the shears 13. The gob former is then opened to allow the charge of glass to fall into the mould of a forming-machine. In a modification, shown in Fig. 5, the gob former consists of a rotarv element 27 formed with a number of radial compartments 28 to receive the glass. A duct 29, bored in the spindle on which the former rotates, forms a communication between the compartments 28 and a flexible tube 21 that leads to the vacuum pump.
Patent GB-718568-A (GB)
Title: Composition for forming sand moulds and cores for casting metals
IPC: B22C1/20
Filed: 1952-08-22
Abstract: A composition for making moulds and cores for casting metals by the shell moulding process comprises foundry sand, about 5 to 10 per cent. by weight of the sand of a solid fusible thermosetting resin and about 0.1 to 1.0 per cent. by weight of the sand of an alkyl, aryl or aralkyl ortho-silicate or polysilicate.  The resin may be a phenol-, urea-, or melamineformaldehyde resin.  The cured moulds and cores have a more uniform resin distribution than those from compositions not containing the organic silicate.  In examples: (1) 10,000 parts of 100-mesh foundry sand, 50 parts of tetra ethyl silicate and 600 parts of a 200-mesh dry phenol formaldehyde resin were mixed and a test bar moulded from the mixture.  (2) As in (1) with the order of adding the ingredients in the mixing changed.  (3) As in (1) but using 6 parts of butyl ortho-silicate, and using the mixture to make a shell mould for a gate-valve plug.  (4) 10,000 parts sand, 700 parts urea-formaldehyde resin and 30 parts of a mixed phenyl-cresyl orthosilicate were mixed and used to make a shell mould for a gate-valve plug.
Patent GB-186222-A (GB)
Title: An improved instrument for drawing ellipses
IPC: B43L11/045
Filed: 1921-08-09
Abstract: 186,222. Hardt, J., and Sobawa, J. Aug. 9, 1921. No Patent granted (Sealing fee not paid). Ellipsographs. - In instruments of the kind in which an ellipse is drawn by passing a pen &c. round a stretched string, the string is passed through eyes 6, 7 in the extremities of legs 1, 2 which are pivoted at 21 and are integral with arms 23, 22 extending beyond the pivot. The arm 23 has an eye 24 through which the string passes, and the arm 22 has two such eyes 25, 26 and also carries a sleeve 27 having eyes 29, 30 to which the ends of the string can be secured, so that the effective length cf the string can be altered by adjusting the sleeve 27 along the arm 22.
Patent GB-602035-A (GB)
Title: Process and apparatus for relief cinematography
IPC: G03B35/16
Filed: 1945-08-20
Abstract: 602,035. Stereoscopic kinematography. BRIZON, J. M. A. Aug. 20, 1945, Nos. 21278 and 21279. Convention dates, July 3, 1944, and July 11, 1944. [Class 97 (i)] Left and right eye images are projected alternately and the viewers are provided with viewing devices controlled by perforations, contacts, &c. provided in the film in association with the images. As shown in Fig. 1, apertures d1, d2, d3 are associated with right eye image frames D1, D2, D3, and apertures g1, g2, g3 are associated with left eye image frames G1, G2, G3. At the gate, Fig. 2, the film passes between two pairs of rollers, one in line with the apertures d1, d2, &c., the other g<1>, g<11> in line with the apertures g1, g2, &c. The roller g<1> is carried on a fixed pivot, g<11> on an arm 2, pivoted at 3 and urged by a spring 4 to make contact with the roller g<1> when one of the apertures g1 &c. passes. Alternatively, a metal contact extending through the film may make contact with both rollers simultaneously. The rollers may be replaced by contact strips, of a length equal to the picture height, and co-operating with a film contact. Such strips may carry a high voltage to produce a spark through film apertures as in Fig. 1. Alternatively, the viewing device is operated pneumatically or electro-pneumatically by an air stream passing through film apertures. In another modification, photo-electric cells are associated with clear and opaque areas between film frames or in the margins. One device for covering the viewer's eyes alternately has a pivoted shutter member with an iron armature attracted in opposite directions by solenoids alternately energized through film operated contacts. The viewing device of Fig. 2 forms the subjectmatter of Specification 602,036.
Patent GB-170360-A (GB)
Title: Garden tractor
IPC: B62D51/04
Filed: 1920-07-14
Abstract: 170,360. Imray, O., (Market Garden Tractor Co.). July 14, 1920. Motor cultivators; lifting tool frames manually. -A small tractor with front driving-wheels and rear castor wheels is adapted to be fitted with a hinged tool frame with cultivating-tools. The crank shaft of the engine 16, Figs. 2 and 3, is extended downwards and provided with a worm 21 which meshes with a worm-wheel 10 adapted to be connected to the axle 8 through a cone clutch 11, 12. The road wheels are driven from the axle through free-wheels. The fly-wheel 22 is arranged over the engine and its weight tends to reduce the end thrust on the bearing 23. The axle casing and crank casing are bolted together and the side bars 25 by which the tractor is guided and controlled are partly let into and secured bv U-bolts 26 to the ends of the axle casing. The castor-wheel spindles 30 are vertically adjustable in clamping brackets 29. A transverse tool bar 34 carrying cultivator teeth 32 is connected by two converging bars 35 to the axle casing and is supported by chains 42 from a shifter bar 41 which may be adjusted transversely by a pivoted hand-lever 38. The tool bar 34 may be raised by means of a pull rod 45 and an angle lever 43 pivoted to the lever 38.
Patent GB-460375-A (GB)
Title: Improvements in or relating to the manufacture of soluble chlorites
IPC: C01B11/10
Filed: 1935-07-26
Abstract: Water-soluble chlorites, such as sodium or calcium chlorite, are obtained by introducing chlorine dioxide into an aqueous medium containing the requisite alkaline material and a sulphurous reducing agent.  As alkaline material the free base is preferably employed, but the carbonate may also be used, and the reducing agent may be finely divided sulphur or a sulphite such as sodium or calcium sulphite.  Good distribution of any reacting materials in suspension is obtained by employing them in a fine state of subdivision and agitating the reaction mixture.  In examples temperatures of 2 and 20 DEG  C. are used, but any temperature between the freezing and boiling points of the solutions may be employed. Specification 460,374 is referred to.
Patent GB-1503906-A (GB)
Title: Antistatic coating compositions
IPC: C08J7/044
Filed: 1974-05-14
Abstract: 1503906 Antistatic coatings AGFA-GEVAERT 29 April 1975 [14 May 1974] 21324/74 Heading B2E [Also in Division G2] A polyester film is coated with an antistatic layer by applying to the unstretched or monoaxially stretched film an aqueous coating composition comprising, after drying, 30-80% by weight of an electroconductive polymer containing at least 50% of recurring units comprising anionic or cationic groups, 10-40% by weight of a stretch-improving agent and 10-40% by weight of an inert filler material, drying the coating and stretching the coated film biaxially or in a direction perpendicular to the first stretching operation, and then heat setting the stretched coated film. The polyester is preferably polyethylene terephthalate, or may be a polyester resulting from polycondensation of glycol or mixtures of glycols with terephthalic acid or of terephthalic acid with isophthalic acid, diphenic acid or sebacic acid.- The electroconductive polymer may be a polystyrene sulphonic acid, a copolymer of styrene and maleic acid or a sodium salt of ethylene-maleic acid copolymer. Other polymeric sulphonate free acids or salts, polyethyleneimines, and various quaternised polymers of heterocyclic amines may also be used. As stretch-improving agents, aliphatic polyhydroxy compounds such as glycerols and other polyols, or caprolactam or N, N'-dimethylurea are used. Alternatively aliphatic or sulphonic acids may be used. The inert filler is preferably a finely divided silica produced by in situ hydrolysis of various silanes. Other fillers include inorganic pigments and polymeric materials highly dispersed. The coating composition may also contain small amounts of waxy materials. The coating may be applied by spray, brush, roller, doctor blade, air brush or wiping. The opposite side of the film may be provided with a subbing layer and a light-sensitive silver halide emulsion layer. Alternatively the 'antistatic layer may be coated onto both sides of the film.
Patent GB-616797-A (GB)
Title: Improvements in or relating to gas-heated water-heaters
IPC: F24H1/18
Filed: 1945-08-21
Abstract: 616,797. Hot-water boilers. MAIN Ltd., R. and A., ADAM, A. J., EMERSON, J., and CHAPMAN, F. W. Aug. 21, 1945, No. 21358. [Class 64(i)] A gas-heated water-heater comprises a combustion space separated from an annular water space by a dividing wall, which dividing wall is provided with an insulating coating on that surface thereof in contact with the water to prevent condensation on the wall. The coating is preferably a vitreous enamel containing asbestos, fired on to the tube, and may be applied in separate layers, the asbestos content of which increases outwardly. In an example a ground mixture of chrysotile asbestos, enamel, and water is fired on to the water side of the tube at 850‹C. in several layers, sand being included in the final layer. In the Provisional Specification the invention is not limited to applying the insulation to the surface of the wall in contact with the water.
Patent GB-1021543-A (GB)
Title: Improvements relating to stabilising circuits for stabilising an electrical supply
IPC: G05F1/573
Filed: 1961-06-15
Abstract: 1, 021, 543. Semi-conductor voltage stabilizers. R. C. FOSS and F.J. U. RITSON. June 15, 1962 [June 15, 1961], No.21573/61. Heading G3R. A current-limited series-transistor-voltagestabilizer comprises a regulator-transistor T 1  with the output taken from the collector, and controlled by a long-tailed-pair voltage-comparatoramplifier T 2 , T 3 , so that for normal loads voltage stabilization is provided, but in the event of overload or short-circuit, conduction of T 2  and hence the base current of T 1  is limited by R 3 , i.e. the short-circuit-current can not exceed IT multiplied by the current-gain of T 1 . Modifications: - (i) Current bleed through T 2  and R 3  from resistor R 5  makes short-circuit current less dependent on current gain of T 1 ; (ii) R 4  in series with T 1  helps load sharing if two or more regulating transistors are used in parallel, such as T 4 , T 5  in Fig. 4 (not shown); (iii) reference source Vs may be a Zener diode fed from the load terminals so that reduction of the reference voltage on short-circuit further limits the overload current (iv) pulse currents in excess of the normal limiting value may be permitted by shunting R3 with an R.C. series network (not shown); (v) in Fig. 4 (not shown) the voltage-comparator amplifier T 8 , T 9  may be separate from the currentlimiter T 6 , T 7 ; further, the comparator may comprise a single transistor with a Zener diode in the emitter circuit.
Patent GB-373846-A (GB)
Title: Improved manufacture of refractory products
IPC: C04B35/16
Filed: 1931-07-28
Abstract: Refractory articles are produced by firing a mixture of granular natural material, having a high magnesium orthosilicate content and a low iron orthosilicate and magnesium hydrosilicate content, such as certain varieties of olivine rock, and finely powdered material consisting of magnesium silicate and substances rich in magnesium such as magnesium oxide, the proportions of granular and powdered materials being chosen so that the total volume is not substantially changed during firing.  Preferably the initial mixture contains so much granular material that it forms a coherent framework.  The finely-powdered material may contain olivine rock containing more magnesium hydrosilicates and iron compounds than does the olivine used for the granular material.  The coarse material may be subjected to a preliminary drying or firing action, and the surface of the grains may be disintegrated by treatment with alkalis or dilute acids.  Small quantities of liquid may be added to form a plastic mass, and such liquid may have a cementing nature, e.g. a suspension of magnesite in a solution of magnesium or calcium chloride.  The formed mass may be fired under alternately oxidizing and reducing conditions. In an example, olivine rock containing 6,5 per cent of iron compounds calculated as FeO and about 6 per cent of magnesium hydrosilicate is crushed and graded into coarsely granular material (having a grain size of ,5 to 8 mm.) and fine granular material.  To 100 kgs. of fine granular material is added about 15 kgs. of caustic magnesite and the mixture is ground to cement fineness.  20 kgs. of water containing 2 kgs. of magnesium chloride is then added to each 600 kgs. of coarse granular material and, after thorough mixing, 550 kgs. of fine material is added.  After more mixing, another 30 kgs. of magnesium chloride solution is added and the mixing is completed. Details of the moulding, drying and firing conditions are given.
Patent GB-1534473-A (GB)
Title: Electrically conducting connection and method of making same
IPC: H01R4/18
Filed: 1977-05-23
Abstract: 1534473 Jointing by stamping; welding by pressure METALLOXYD GmbH 23 May 1977 [26 May 1976] 21635/77 Headings B3Q and B3R [Also in Division H2] A bundle 1 of mutually insulated conductor strips are cold pressure welded together and to a terminal connector 2, by at least one hole 10, 10<SP>1</SP> produced by cold pressure welding and extending through the bundle 1 of strips and into a part, e.g. plate 9 or strips 5 as shown, of the connector 2. The electrical connection may be improved by spray metallizing (8) an end face of the arrangement (Figs. 1a, 1b, 1c, not shown). A hole 10, 10<SP>1</SP> may pass right through the connector 2, a copper rivet being disposed in the hole to improve the fastening effect. The welding is effected by apparatus (Fig. 3) comprising a support 30 and a welding mandrel 34 having a spherical head 35, the mandrel 34 being carried by a plunger. A pneumatic or hydraulic ram effects movement of the mandrel, or a manually operated lever may be employed.
Patent GB-752977-A (GB)
Title: Bottle for containing liquid under pressure and adapted to receive a spray cap
IPC: B65D83/14
Filed: 1954-07-23
Abstract: 752,977. Dispensing liquids by gaseous pressure. GALEAZZI, F. July 23, 1954 [July 24, 1953], No. 21655/54. Class 102(2). [Also in Group XVII] A closure cap 8 for a bottle 1 containing under pressure a liquid 2 such as scent, insecticide, disinfectant, &c., clamps tightly with its border 9 around the upper portion of the bottle neck 3 and has an embossment 10 on to which is fitted a tube 12 reaching to the bottom of the bottle, the cap having a thin wall which can be easily pierced by the needle of a spray head. The neck 3 has a seat 5 for a gasket 7 and has annular flutes 6 of triangular cross section.
Patent GB-1273441-A (GB)
Title: Pulse generator circuit
Inventor: KEOHANE MAURICE JAMES
IPC: H03K3/57
Filed: 1969-04-29
Abstract: 1,273,441. Pulse generating circuits. MULLAKD Ltd. 29 April, 1969, No. 21731/69. Heading H3T. [Also in Division G3] In the operation of a pulse generator, switches 6, preferably a thyristor and 9 are closed simultaneously, switch 6 discharging a PFN 2 through a load 5, and switch 9 allowing current to pass through a transformer 10 so that a capacitor 7 is charged through the secondary winding and a diode 13 which tends to reverse bias a diode 3 so isolating the PFN and switch 6 from the capacitor 7; when switch 9 is reopened capacitor 7 charges PFN 2 through the diode 3 and the secondary winding of transformer 10 in preparation for the next cycle. Thyristor 6 and switch 9, a transistor, are controlled by a monostable multivibrator 16, 18 a pulse tc the gate of thyristor 6 being differentiated via transistor 25 to provide a triggering voltage spike. The height of the generated pulses is stabilized by sampling the voltage across capacitor 7 via a lead 15, and comparing it in a tran sistor 19 with a reference voltage across a Zener diode 20. The output from transistor 19 controls the length of the pulse from multivibrator 16, 18 and hence the voltage stored in capacitor 7. A capacitor 25a may be inserted so that the stabilizer is sensitive only to long term variations in pulse height. The height may be varied by a variable resistor 21.
Patent GB-336308-A (GB)
Title: Improvements in driving belts, cords or bands
IPC: F16G1/04
Filed: 1929-07-16
Abstract: 336,308. Spencer, Moulton, & Co., Ltd., G., and Pickles, S. S. July 16, 1929. Waterproofing; proofing processes and compositions. - Driving-belts and the like for spinning- spindles &c. of cotton tape, cotton webbing, or stranded cotton cord, &c. are waterproofed by impregnation with a non-aqueous solution or suspension of rubber, for example in naphtha or benzene, compounding materials, such as sulphur, zinc oxide, carbon black, &c. and an organic ultra accelerator for vulcanization, for example of zinc alkyl xanthate, dithiocarbamate, or thiuram disulphide type. Vulcanization takes place in air at ordinary temperatures in one or two days, or more quickly at temperature of 100-110‹ C. produced by passing the bands over steam-heated plates or cylinders or through heated pipes. The process may be divided into two operations by passing the bands first through a solution containing all the compounding materials but either no accelerator or a mild accelerator, and secondly through a solution containing compounding materials without sulphur but with the ultra accelerator. The solvent may be removed and recovered by exposure to air in an enclosure.